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What an interesting subject to post!! Thank you, gentlemen!!

Did you settle on a starting load Bill?

Steve, I haven't had a chance yet to try the Lancaster. I'm having Steve Brooks make an adjustable paper patch mould. I can't say for certain what the twist is, but it seems close to 1 in 60". I'll be able to fiddle with bullet weight to see what works best. It should do well. The bores are like new. I found an article in DGJ by Ross Seyfried where he describes shooting a nearly identical rifle. He uended up using a straight-sided pp bullet. Thanks, Bill

One in sixty would seem to be a very slow twist for any elongated bullet. I shot 60" twists in larger bore roundball rifles but always understood that as the projectile got longer than the diameter it needed more twist to stabilize it.

Just some thoughts based on my experience.

If you know the twist you can run the Greenhill formula to determine the best length of bullet. Then, what I do, is peruse Accurate Molds catalog and fid the right length bullet for the twist, the weight will be secondary to length.

As Stanton mentioned, 1-60 is very slow and definitely a round ball twist.